<div mt:import="\maotool\src\test\DemoTest::base()">
    <head mt:slot="head">
        <meta charset="UTF-8">
        <title mt:import="\maotool\src\test\DemoTest::head()"></title>
    </head>
    <body mt:slot="body">
        hello world
        <div>hi</div>
    </body>
</div>